Assembled electric seat rack

Abstract

The invention relates to a split mounting type electric seat rack which comprises a connecting assembly, a seat mounting plate, a backrest frame and two mechanical stretching units, each mechanical stretching unit is composed of a frame assembly, a leg and foot assembly, a transmission assembly, a backrest assembly and a seat frame assembly, the leg and foot assembly is mounted on the seat frame assembly, and the connecting assembly comprises a front driving rod and a rear driving rod. The driving assembly is connected with the seat frame assembly, the driving front rod is connected with the leg and foot assembly, and the driving rear rod is connected with the frame assembly, and is characterized in that the seat frame assembly is mounted in an aligned manner through a seat mounting plate, the backrest assembly is mounted in an aligned manner through a backrest frame, and the transmission assembly is provided with a side plate, a pulley block, a transmission front connecting piece, a transmission rear connecting piece and a leg and foot assembly connecting piece; the side plate is installed on a sliding rail of the frame assembly through a pulley block, the front transmission connecting piece and the rear transmission connecting piece are hinged to the front portion and the rear portion of the side plate respectively, the rear end of the leg and foot assembly connecting piece is hinged to the side plate, and the front end of the leg and foot assembly connecting piece is hinged to the leg and foot assembly. The device is convenient to install and maintain and good in safety and stability.

Description

Technical Field

[0001] This application relates to a modular electric seat frame, which is mainly applicable to the design and production of modular electric sofa frames with adjustable posture (referring to a model where products are manufactured and packaged as parts and assembled at the customer's or destination). Background Technology

[0002] Referring to the patent publication document with application publication number CN110693227A and invention title "An Electromechanical Extension Device", the main defects of the prior art include: 1. Its support and fixing rod is installed on the main frame of the seat and does not move relative to the bottom surface, so the upper end of its backrest rod tilts significantly backward when lying down. Figure 4 1. The overall mechanism may affect items behind it, posing a certain risk; 2. Its main components are all separate parts, and the installation and alignment of the two mechanical extension units on both sides are relatively troublesome and inconvenient, increasing the workload of installation and debugging, and affecting the overall stability and quality of the product. Summary of the Invention

[0003] The technical problem solved by this application is to overcome the shortcomings of the prior art and provide a modular electric seat frame that does not move backward and affect items behind it, is easy to install, maintain and align, and has good overall stability.

[0004] The technical solution adopted by this application to solve the above-mentioned technical problems is as follows: a modular electric seat frame, including a connecting assembly, a seat mounting plate, a backrest frame, and two mechanical extension units symmetrically arranged on the left and right sides. The two mechanical extension units are connected into one unit by the connecting assembly. Each mechanical extension unit consists of a frame assembly, a leg assembly, a transmission assembly, a backrest assembly, and a seat frame assembly. The two leg assemblies are respectively mounted on the two seat frame assemblies. The connecting assembly includes a front drive rod, a rear drive rod, and a frame stabilizing tube. The two ends of the front drive rod are respectively connected to the two leg assemblies. The frame stabilizing tube and the rear drive rod... The device is mounted on two frame assemblies at both ends. Its features include: two seat frame assemblies aligned via seat mounting plates; two backrest assemblies aligned via backrest frames; each frame assembly equipped with a slide rail; and a transmission assembly comprising a side plate, a pulley system, a front transmission connector, a rear transmission connector, and a leg assembly connector. The lower part of the side plate has a pulley system mounted on the slide rail via front and rear pulleys. The front transmission connector is hinged to the front of the side plate, the rear transmission connector is hinged to the rear of the side plate, the rear end of the leg assembly connector is hinged to the side plate, and the front end of the leg assembly connector is hinged to the leg assembly. This application uses a drive assembly to actuate a drive rod, correspondingly causing the leg assembly and related seat frame, transmission, and backrest assemblies to switch between sitting, TV, and reclining positions. In the reclining position, the upper part of the backrest frame tilts backward, the lower part moves forward, and the rear part of the backrest frame does not move backward or moves only slightly, thus overcoming the first defect of the prior art. Both seat frame components in this application are installed using a seat mounting plate manufactured as a whole, resulting in high alignment accuracy. With good alignment of the two seat frame components, the leg components, transmission components, backrest components, and related frame components and connecting components connected to the seat frame components are also accurately aligned, resulting in good overall symmetry and stability, and convenient installation and maintenance, thus overcoming the second defect of the prior art.

[0005] The front transmission connector is provided with a lying position limiter, and the rear transmission connector is provided with a lying position limiter. When lying down, both the front and rear transmission connectors are in contact with the seat frame assembly.

[0006] The backrest assembly described in this application includes a backrest panel, a front backrest connector, a rear backrest connector, a rear backrest connector support, a lower backrest connector, and a backrest stabilizing tube. The backrest panel is provided with a backrest panel reclining posture limiter and a hinge shaft for the backrest panel rear backrest connector. The front backrest connector is provided with a backrest panel reclining posture limiter. The rear backrest connector is provided with a backrest panel reclining posture limiter and a hinge shaft for the backrest panel rear backrest connector. The rear backrest connector support is provided with a backrest panel support reclining posture limiter and a backrest panel support hinge shaft. The upper end of the backrest panel is fixedly connected to the backrest frame. The upper end of the front backrest connector is hinged to the front end of the backrest panel. The upper end of the rear backrest connector is connected to the backrest panel via the backrest panel rear backrest connection. The backrest is hinged to the backrest panel via a hinge shaft. The middle of the backrest connector is hinged to the seat frame mounting plate via a hinge shaft six. The lower end of the backrest connector is hinged to the backrest support via a hinge shaft. The other end of the backrest support is hinged to the lower backrest connector via a hinge shaft. The lower backrest connector is fixedly mounted on the frame assembly. The backrest stabilizing tube is fixedly connected to the backrest support. In a reclining position, the backrest panel's reclining limit contactes the front backrest connector, and both the front and rear backrest connectors' reclining limit contact the seat frame mounting plate. In a sitting position, the backrest support's sitting limit contactes the backrest connector. This application, through the design of the backrest assembly, achieves effective forward movement and limiting support of the entire backrest in a reclining position, improving support stability and preventing the rear from moving backward and touching other items.

[0007] The frame assembly is provided with a frame stabilizing tube mounting component, and the two ends of the frame stabilizing tube are fixed to the two frame assemblies by the frame stabilizing tube mounting component.

[0008] This application also includes a drive mechanism, with its front end hinged to the front drive rod and its rear end hinged to the rear drive rod. A specific example of the drive mechanism is an electric actuator.

[0009] The frame assembly described in this application is provided with a reset spring mounting block, and a reset spring mounting shaft is provided on the side plate. The reset spring is installed between the reset spring mounting block and the reset spring mounting shaft to assist the assembled electric seat frame in transitioning from a reclining position to a TV position.

[0010] The leg assembly described in this application comprises a first leg link, a second leg link, a third leg link, a fourth leg link, a fifth leg link, a sixth leg link, and a footrest connector. The first leg link and the second leg link are respectively hinged to the seat frame mounting plate via hinge shaft two and hinge shaft one. One end of the first leg link is hinged to the leg assembly connector via the hinge shaft of the leg assembly connector. The other end of the first leg link is hinged to one end of the third leg link. The middle part of the third leg link is hinged to the middle part of the second leg link. The other end of the third leg link is hinged to one end of the fifth leg link. The middle part of the fifth leg link is hinged to the middle part of the fourth leg link. The other end of the fifth leg link is hinged to one end of the sixth leg link. The other end of the sixth leg link is hinged to one end of the footrest connector. The other end of the footrest connector is hinged to one end of the fourth leg link. The other end of the fourth leg link is hinged to the second leg link. A leg assembly limiter is provided on the second leg link.

[0011] Compared with the prior art, this application has the following advantages and effects: good safety, convenient installation and maintenance, and good overall stability. Attached Figure Description

[0012] Figure 1 This is a partial exploded view of an embodiment of this application.

[0013] Figure 2 This is a three-dimensional schematic diagram of the sitting posture in an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of the inside of the seated posture in an embodiment of this application.

[0015] Figure 4 This is a schematic diagram of the inner side of the TV posture state in an embodiment of this application.

[0016] Figure 5 This is a schematic diagram of the inner side of the lying position in an embodiment of this application.

[0017] Figure 6 This is a schematic diagram of the inner side of the main moving parts in the embodiments of this application.

[0018] Figure 7 This is a schematic diagram of the outer side of the main moving parts in the embodiments of this application.

[0019] In the picture: The frame assembly consists of the following components: 1. Symmetrical left and right sides; 2. Slide rail; 3. Frame stabilizing tube mounting component; 4. Return spring mounting block; 5. Leg assembly; 6. First leg connecting rod; 7. Second leg connecting rod; 8. Leg assembly limiter; 9. Third leg connecting rod; 10. Fourth leg connecting rod; 11. Fifth leg connecting rod; 22. Sixth leg connecting rod; 12. Footrest connecting component; 13. Transmission assembly; 14. Side plate; 15. Return spring mounting shaft; 16. Pulley block; 17. Front transmission connector; 18. Front transmission connector hinge shaft; 19. Front transmission connector reclining position limiter; 20. Rear transmission connector; 10. Rear transmission connector hinge shaft; 10. Rear transmission connector reclining position limiter; 11. Rear transmission connector reclining position limiter; 12. Rear back connector; 13. Front back connector; 14. Backrest front connector reclining position limit 421, backrest back connector 43, backrest back connector reclining position limit 431, backrest back connector hinge shaft 432, backrest back connector support 44, backrest back connector support sitting position limit 441, backrest back connector support hinge shaft 442, backrest lower connector 45, backrest stabilizing tube 46, seat frame assembly 5, seat frame mounting plate 51, seat frame mounting plate hinge shaft one 511, seat frame mounting plate hinge shaft two 512, seat frame mounting plate hinge shaft three 513, seat frame mounting plate hinge shaft four 514, seat frame mounting plate hinge shaft five 515, seat frame mounting plate hinge shaft six 516, seat frame limit one 517 (TV posture reclining position limit), seat frame limit two 518 (TV posture reclining position limit), connecting assembly 6, drive front rod 61, drive rear rod 62, frame stabilizing tube 63, drive device 7, seat mounting plate 8, backrest frame 9. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are illustrative of the present application, but the present application is not limited to them. Figure 3 Left is front, right is back.

[0021] See Figures 1 to 7This application embodiment of the modular electric seat frame includes a connecting assembly 6, a seat mounting plate 8, a backrest frame 9, and two mechanical extension units symmetrically arranged on the left and right sides. The two mechanical extension units are connected as one unit by the connecting assembly 6, the seat mounting plate 8 (connecting the two side seat frame assemblies 5), and the backrest frame 9 (connecting the two side backrest assemblies 4). Each mechanical extension unit consists of a frame assembly 1, a leg assembly 2, a transmission assembly 3, a backrest assembly 4, and a seat frame assembly 5. The two leg assemblies 2 are respectively mounted on the two seat frame assemblies 5. The connecting assembly 1 includes a front drive rod 61, a rear drive rod 62, and a frame stabilizing tube 63. The two ends of the front drive rod 61 are respectively connected to the two leg assemblies 2. The two ends of the frame stabilizing tube 63 and the rear drive rod 62 are respectively mounted on the two frame assemblies 1. The frame assembly 1 is provided with a slide rail 11. The transmission assembly 3 is provided with a side plate 31, a pulley group 32, and a transmission front... The system includes a connector 33, a front connecting member hinge shaft 331, a front connecting member lying posture limiter 332, a rear connecting member 34, a rear connecting member hinge shaft 341, a rear connecting member lying posture limiter 342, and a leg assembly connector 35. A pulley group 32 is provided at the lower part of the side plate 31. The pulley group 32 is mounted on the slide rail 11 via front and rear pulleys. The front connecting member 33 is hinged to the front of the side plate 31 via the front connecting member hinge shaft 331, and the rear connecting member 34 is hinged to the rear of the side plate 31 via the rear connecting member hinge shaft 341. The front connecting member 33 has a front connecting member lying posture limiter 332, and the rear connecting member 34 has a rear connecting member lying posture limiter 342. The rear end of the leg assembly connector 35 is hinged to the side plate 31, and the front end of the leg assembly connector 35 is hinged to one end of the leg connecting rod 21 via the leg assembly connector hinge shaft 351. This application uses the drive device 7 to move the drive front rod 61 forward, thereby causing the leg assembly 2 to extend forward. Figure 4 The TV posture shown; when the head of the drive device 7 continues to move forward, the leg assembly 2 cannot continue to unfold due to the limitation of the leg assembly. Therefore, the leg assembly 2 drives the seat frame mounting plate 51 to move forward, thereby driving the transmission assembly 3 to move forward. The transmission assembly 3 drives the backrest assembly 4 to move forward as a whole, and the backrest plate 41 tilts backward, causing the backrest assembly 4 to reach the desired position. Figure 5 In the lying position shown, the upper part of the backrest frame 9 tilts backward and the lower part of the backrest frame 9 moves forward, so that the final effect is that the back of the backrest frame 9 does not move backward or the backward movement is very small (no more than 5 cm), thus overcoming the first defect of the prior art.

[0022] Both seat frame assemblies 5 in this application are installed by the seat mounting plate 8 configured as a whole, with high alignment accuracy. When the two seat frame assemblies 5 are well aligned, the leg assembly 2, transmission assembly 3, backrest assembly 4 and related frame assembly 1 and connecting assembly 6 connected to the seat frame assembly 5 are also accurately aligned, thus the overall symmetry and stability are relatively good.

[0023] The backrest assembly 4 described in this application includes a backrest panel 41, a front backrest connector 42, a rear backrest connector 43, a rear backrest connector support 44, a lower backrest connector 45, and a backrest stabilizing tube 46. The backrest panel 41 is provided with a backrest panel reclining posture limiter 411 and a backrest panel rear backrest connector hinge shaft 412. The front backrest connector 42 is provided with a front backrest connector reclining posture limiter 421. The rear backrest connector 43 is provided with a rear backrest connector reclining posture limiter 431 and a rear backrest connector hinge shaft 432. The rear backrest connector support 44 is provided with a rear backrest connector support reclining posture limiter 441 and a rear backrest connector support hinge shaft 442. The upper end of the backrest panel 41 is fixedly connected to the backrest frame 9. The upper end of the front backrest connector 42 is hinged to the front end of the backrest panel 41. The upper end of the rear backrest connector 43 is connected to the backrest panel via a rear backrest connection. The backrest panel 41 is hinged to the hinge shaft 412. The middle part of the backrest connecting member 43 is hinged to the seat frame mounting plate 51 via the hinge shaft 516. The lower end of the backrest connecting member 43 is hinged to the backrest connecting member support 44 via the backrest connecting member hinge shaft 432. The other end of the backrest connecting member support 44 is hinged to the lower backrest connecting member 45 via the backrest connecting member support hinge shaft 442. The lower backrest connecting member 45 is fixedly installed on the frame assembly 1. The backrest stabilizing tube 46 is fixedly connected to the backrest connecting member support 44. When in a reclining position, the backrest panel reclining limit 411 touches the front backrest panel connecting member 42. The reclining limit 421 of the front backrest connecting member and the reclining limit 431 of the backrest connecting member both touch the seat frame mounting plate 51. When in a sitting position, the sitting limit 441 of the backrest connecting member support touches the backrest connecting member 43. This application, through the design of the backrest component 4, enables the backrest to move forward as a whole while maintaining effective limiting support when in a reclining position, thereby improving support stability and preventing the rear from moving backward and touching other items.

[0024] The frame assembly 1 is provided with a frame stabilizing tube mounting component 12, and the frame stabilizing tube 63 is fixed to the frame assembly 1 through the frame stabilizing tube mounting component 12.

[0025] This application also includes a drive device 7, the front end of which is hinged to the front drive rod 61, and the rear end of which is hinged to the rear drive rod 62. A specific example of the drive device 7 is an electric actuator.

[0026] The frame assembly 1 of this application is provided with a reset spring mounting block 13, and the side plate 31 is provided with a reset spring mounting shaft 311. The reset spring is installed between the reset spring mounting block 13 and the reset spring mounting shaft 311 to assist the transition from the lying position to the TV position in this embodiment.

[0027] The leg assembly 2 of this application consists of a first leg link 21, a second leg link 22, a third leg link 23, a fourth leg link 24, a fifth leg link 25, a sixth leg link 26, and a footrest connector 27. The first leg link 21 and the second leg link 22 are respectively hinged to the seat frame mounting plate 51 via the second hinge shaft 512 and the first hinge shaft 511 of the seat frame mounting plate. One end of the first leg link 21 is hinged to the leg assembly connector 35 via the hinge shaft 351 of the leg assembly connector, and the other end of the first leg link 21 is hinged to one end of the third leg link 23. The middle part of the third leg link 23 is hinged to the middle part of the second leg link 22. The other end of the third leg link 23 is hinged to one end of the fifth leg link 25. The middle part of the fifth leg link 25 is hinged to the middle part of the fourth leg link 24. The other end of the fifth leg link 25 is hinged to one end of the sixth leg link 26. The other end of the sixth leg link 26 is hinged to one end of the footrest connector 27. The other end of the footrest connector 27 is hinged to one end of the fourth leg link 24. The other end of the fourth leg link 24 is hinged to the second leg link 22. The second leg link 22 is provided with a leg assembly limit 221.

[0028] The application process is as follows: exist Figure 3 In the aforementioned sitting posture, if the user wishes to adjust the seat position, they can control the drive device 7 via a controller (existing technology, not shown in the figure), thereby driving the drive front rod 61 forward and causing the leg assembly 2 to extend forward. When the leg assembly limit 221 touches the third leg link 23, this embodiment enters [the following state / phase]. Figure 4 The TV posture shown; when the head of the drive device 7 continues to move forward, the leg assembly 2 cannot continue to unfold. Therefore, the leg assembly 2 drives the seat frame mounting plate 51 to move forward, thereby driving the transmission assembly 3 to move forward. The transmission assembly 3 drives the backrest assembly 4 to move forward as a whole, and the backrest plate 41 tilts backward, causing the backrest assembly 4 to reach the desired position. Figure 5 The image shows a lying position. Returning to a sitting position from a lying position is similar.

[0029] All parts not described in this application are prior art and will not be detailed further. Any simple modifications or combinations of the technical features and solutions of this application shall be considered to fall within the protection scope of this application.

Claims

1. A modular electric seat frame, comprising a connecting assembly, a seat mounting plate, a backrest frame, and two symmetrically arranged mechanical extension units, the two mechanical extension units being connected as one unit by the connecting assembly. Each mechanical extension unit consists of a frame assembly, a leg assembly, a transmission assembly, a backrest assembly, and a seat frame assembly. The two leg assemblies are respectively mounted on two seat frame assemblies. The connecting assembly includes a front drive rod, a rear drive rod, and a frame stabilizing tube. The two ends of the front drive rod are respectively connected to the two leg assemblies, and the two ends of the frame stabilizing tube and the rear drive rod are respectively mounted on the two frame assemblies. The characteristic feature is: Two seat frame assemblies are aligned and installed via seat mounting plates, and two backrest assemblies are aligned and installed via backrest frames. The frame assembly is provided with slide rails, and the transmission assembly is provided with side plates, pulley blocks, a front transmission connector, a rear transmission connector, and a leg assembly connector. The lower part of the side plate is provided with pulley blocks, which are mounted on slide rails. The front transmission connector is hinged to the front of the side plate, the rear transmission connector is hinged to the rear of the side plate, the rear end of the leg assembly connector is hinged to the side plate, and the front end of the leg assembly connector is hinged to the leg assembly.

2. The modular electric seat frame according to claim 1, characterized in that: The front transmission connector is provided with a lying position limiter, and the rear transmission connector is provided with a lying position limiter. When lying down, both the front and rear transmission connectors are in contact with the seat frame assembly.

3. The modular electric seat frame according to claim 1, characterized in that: The backrest assembly includes a backrest panel, a front backrest connector, a rear backrest connector, a rear backrest connector support, a lower backrest connector, and a backrest stabilizing tube. The backrest panel has a reclining posture limiter and a hinge shaft for the rear backrest connector. The front backrest connector also has a reclining posture limiter. The rear backrest connector has a reclining posture limiter and a hinge shaft. The rear backrest connector support has a reclining posture limiter and a hinge shaft. The upper end of the backrest panel is fixedly connected to the backrest frame. The upper end of the front backrest connector is hinged to the front end of the backrest panel. The upper end of the rear backrest connector is connected to the rear backrest connector via the backrest panel rear backrest connector. The hinge shaft is hinged to the backrest panel. The middle part of the backrest connector is hinged to the seat frame mounting plate via the hinge shaft six. The lower end of the backrest connector is hinged to the backrest connector support via the backrest connector hinge shaft. The other end of the backrest connector support is hinged to the lower backrest connector via the backrest connector support hinge shaft. The lower backrest connector is fixedly installed on the frame assembly. The backrest stabilizing tube is fixedly connected to the backrest connector support. When in a reclining position, the backrest panel reclining limit touches the front backrest connector. Both the front backrest connector reclining limit and the backrest connector reclining limit touch the seat frame assembly. When in a sitting position, the backrest connector support sitting limit touches the backrest connector.

4. The modular electric seat frame according to claim 1, characterized in that: The frame assembly is provided with a frame stabilizing tube mounting component, and the two ends of the frame stabilizing tube are fixed to the two frame assemblies by the frame stabilizing tube mounting component.

5. The modular electric seat frame according to claim 1, characterized in that: It is also equipped with a drive unit, the front end of which is hinged to the front drive rod, and the rear end of which is hinged to the rear drive rod.

6. The modular electric seat frame according to claim 1, characterized in that: The frame assembly is provided with a reset spring mounting block, and a reset spring mounting shaft is provided on the side plate. A reset spring is installed between the reset spring mounting block and the reset spring mounting shaft.

7. The modular electric seat frame according to claim 1, characterized in that: The leg assembly consists of a first leg link, a second leg link, a third leg link, a fourth leg link, a fifth leg link, a sixth leg link, and a footrest connector. The first leg link and the second leg link are respectively hinged to the seat frame mounting plate via hinge shaft two and hinge shaft one. One end of the first leg link is hinged to the leg assembly connector via the hinge shaft of the leg assembly connector. The other end of the first leg link is hinged to one end of the third leg link. The middle part of the third leg link is hinged to the middle part of the second leg link. The other end of the third leg link is hinged to one end of the fifth leg link. The middle part of the fifth leg link is hinged to the middle part of the fourth leg link. The other end of the fifth leg link is hinged to one end of the sixth leg link. The other end of the sixth leg link is hinged to one end of the footrest connector. The other end of the footrest connector is hinged to one end of the fourth leg link. The other end of the fourth leg link is hinged to the second leg link. A leg assembly limiter is provided on the second leg link.

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